Updated information available in viewtopic.php?p=16024567#p16024567
I think we were finally able to track down this issue which caused the aforementioned issues with the new posts page:
https://tracker.phpbb.com/browse/PHPBB-17375
The linked pull request contains the currently proposed fix for this.
Statistics: Posted by P_I — Wed Jul 31, 2024 11:46 pm